I have a couple of mid-drive e-bikes (Bafang motors) with throttles. Throttled mid-drives let you get the best of both worlds: Great pedal assist combined with the ability to just be a scooter when you get tired. And I agree that mid-drive is the way to go if you want to ride on hills. If you commute in San Francisco for example, a hub drive e-bike will not help you much but a mid-drive will change your life.